Sims in CAS (***Regular CAS, NOT full edit mode***) cannot be set as spouses. It is the third option on the list and appears selectable, but when I try to select it they remain roommates. I thought it might be a resolution issue but changing the graphics around did not allow me to click on it. Both Sims are adults. There are no other relationships which conflict with them being spouses.
Merged your post with your old thread. Better to retain the history what you've already tried
Did you ever did a rename of your user folder and try again ?
